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Design notes by category

• DBS
• Motor control
• Lighting
• Audio
• Power management

All design notes

• DN2  Sonar transducer driver using TO92 style bipolar transistors.
• DN3  High current high voltage analogue switches.
• DN4  Temperature effects on silicon semiconductor devices.
• DN5  Remote control servo amplifier using protection free 1A DC rated SOT23 devices.
• DN6  6V battery operated fluorescent lamp.
• DN7  Printer stepper motor drivers.
• DN8  8W, 12V fluorescent lamp.
• DN9  Automotive security systems and RF transistor products.
• DN10  3V distress beacon.
• DN11  Low noise audio input stage.
• DN12  Ionising smoke detector.
• DN13  High efficiency hybrid DC-DC converter.
• DN14  Brushless DC fan driver.
• DN15  Flashgun converter.
• DN16  Low dropout linear regulators.
• DN17  Gaming machine lamp driver.
• DN18  Emergency lighting fluorescent lamp.
• DN19  Remote control motor driver.
• DN20  Features and applications of the ZVN4210A.
• DN21  Automotive alarm siren driver.
• DN22  LCD display fluorescent backlighting.
• DN24  The ZTX413 avalanche transistor.
• DN25  Flash gun inverter using super E-Line bipolar transistors.
• DN26  D.C. motor speed control using the ZTX450.
• DN27  12V solenoid driver/latch.
• DN28  6W inverter for MOS logic supplies.
• DN29  ZVP4424 and ZVN4424 in telephone hook-switch and earth recall applications.
• DN30  High speed turn-off circuit for PNP pass transistors.
• DN31  High voltage generation for xenon tube applications.
• DN32  A high efficiency constant current source for battery charging applications.
• DN33  Isolating high side switch for thermal printer SMPS.
• DN34  High efficiency converter for LCD bias contrast supplies.
• DN36  ZDC833A dual variable capacitance diode.
• DN37  The ZR431 low reference voltage shunt regulator.
• DN38  The ZR431 low reference voltage shunt regulator in SMPS control loops.
• DN39  ZLDO series - quiescent current vs. dropout voltage.
• DN40  Applications of the ZMR250 SOT23 miniature regulator.
• DN43  High efficiency DC-DC isolated converter.
• DN49  ZR2431 programmable supply monitor.
• DN54  High efficiency DC-DC converter, using high density SOT23-6 MOSFETs.
• DN55  A high efficiency royer driver for a scanner CCFL.  {updated}
• DN59  Load switch.
• DN60  Zetex high voltage MOSFETS in call router circuits.
• DN61  ZXSC310 solution for a 1W high power white LED. {updated August 2007}
• DN62  ZXSC310 solution to drive 3 LEDs connected in series.
• DN63  ZXSC310 solution to drive 8 LEDs connected in series. {updated August 2007}
• DN64  ZXSC310 solution flashlight.
• DN65  ZXSC310 solution for emergency light.
• DN66  An OLED bias supply for a clamshell handset sub display.
• DN67  ZXSC400 solution for 1W high powered LED.
• DN68  ZXSC310 high power torch reference design.
• DN69  ZXSC310 garden light reference design.
• DN70  ZXSC400 driving 2 serial high power LEDs. {updated July 2007}
• DN71  ZXSC400 solution for 5W high powered LED. {updated July 2007}
• DN72  ZXLD1101 driving 8 series LEDs.
• DN73  ZXSC300 step down converter for 3W LED.
• DN74  ZXSC400 photoflash LED reference design.
• DN75  ZXSC310 solar powered garden light reference design.
• DN76  ZXLD1100 and ZXLD1101 driving from 3 to 6 LEDs.
• DN77  Transient and noise protection for Zetex ZXCT series current monitors. {updated Dec 2007}
• DN78  ZXSC310 with reverse polarity protection. {updated August 2007}
• DN79  ZXSC400 1W LED driver.
• DN80  Bipolar transistors for MOSFET gate driving applications. {updated February 2008}
• DN81  Lighting design note handbook  {updated}
• DN82  Start up switches for switch mode power supplies
• DN83  LED MR16 Lamp solution using the ZXLD1350 LED driver
• DN84  ZXSC400 Driving 3W high power LEDs {new}
• DN85  ZXSC400 1W/3W buck LED drivers {new}
• DN86  Reduced component count and compact reference design for MR16 replacement lamps using multiple 1W LEDs
• DN86  Chinese version - Reduced component count and compact reference design for MR16 replacement lamps using multiple 1W LEDs
• DN87  Maintaining a short term supply rail to the ZXCT1081 during a short-circuit load or overload event  {NEW}
• DN88  The ZXCT1030 current monitor used as a GPS antenna switch with short circuit protection  {NEW}

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